My Inquiry
My Account
Diodes Incorporated AP7387-30SA-7
- Part No.:
- AP7387-30SA-7
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP7387-30SA-7.pdf
- Description:
- LDO CMOS LowCurr SOT23 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:2,088
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP7387-30SA-7 from Diodes Incorporated is a 3.0V fixed-output, wide-input (5–60V), 150mA ultra-low-dropout linear regulator in SOT23 package, featuring 700mV dropout at 100mA, 2μA quiescent current, and 70dB PSRR at 1kHz-designed for battery-powered smoke detectors and EV battery management systems where high input voltage tolerance and low standby power are critical.
For engineers reviewing the AP7387-30SA-7 datasheet, AP7387-30SA-7 pinout, AP7387-30SA-7 application, or AP7387-30SA-7 equivalent, key selection considerations include dropout behavior under 150mA load, thermal resistance (248.5°C/W in SOT23), output accuracy (±2%), transient response to rapid load steps, and compatibility with 10μF ceramic output capacitance.
Technical Context
The AP7387-30SA-7 integrates a precision voltage reference, error amplifier, and current-limit circuit with thermal shutdown and short-circuit protection. Its architecture delivers fast line/load transient response due to optimized internal compensation and low-output-impedance regulation.
It operates across –40°C to +85°C ambient temperature with junction limit of +125°C, supports 1μF input and 10μF output ceramic capacitors (X7R/X5R), and maintains ±2% output accuracy over line, load, and temperature variations without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±2% - ensures stable MCU core or sensor supply without external feedback resistors. |
| Input Voltage Range | 5V to 60V - enables direct connection to automotive batteries, industrial 24/48V rails, or unregulated wall adapters. |
| Max Output Current | 150mA - sufficient for low-power microcontrollers, analog sensors, or RF modules in space-constrained designs. |
| Dropout Voltage | 700mV @ 100mA (typ.) - allows regulation down to VIN = 3.7V while maintaining 3.0V output, extending battery runtime. |
| Quiescent Current | 2μA (typ.) - minimizes standby power loss in always-on smoke detectors or remote sensors. |
| PSRR | 70dB @ 1kHz - suppresses ripple from noisy DC-DC converters or alternator sources feeding the LDO input. |
| Thermal Shutdown | Triggers at +150°C with +30°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking. |
Pinout & Package
SOT23-3 package (JEDEC TO-236AB), 2.9mm × 1.3mm footprint, 0.95mm height, with exposed pad not present - thermal path relies on PCB copper area connected to GND via pins 1 (VIN), 2 (GND), and 3 (VOUT).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply pin; accepts 5–60V; requires 1μF ceramic capacitor placed adjacent to minimize noise coupling. |
| 2 | GND | Power ground reference; must connect directly to low-impedance PCB ground plane to ensure stability and thermal dissipation. |
| 3 | VOUT | Regulated 3.0V output; drives up to 150mA; requires 10μF X7R/X5R ceramic capacitor placed within 2mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Wide input range (5–60V) | Eliminates need for pre-regulation stages in 12/24/48V industrial or automotive subsystems. |
| Ultra-low IQ (2μA) | Extends shelf life and operational time in battery-backed safety devices such as smoke alarms. |
| High PSRR (70dB @ 1kHz) | Maintains clean 3.0V rail despite switching noise from upstream DC-DC converters or motor drivers. |
| Fast transient response | Minimizes output voltage deviation during sudden load changes (e.g., BLE radio transmit bursts in IoT sensors). |
| Integrated protections | Combines current limiting, thermal shutdown, and short-circuit protection - no external circuitry required for robustness. |
Applications
| Smoke Detector Power Supply | EV Battery Monitoring Node |
|---|---|
Use Scenario: Primary 3.0V rail for CO/SMOKE sensor ICs and MCU in mains-powered + battery-backup residential smoke alarms. IC Role / Device Role / Timing Role: Ultra-low-IQ LDO providing always-on regulated supply during AC failure, enabling 10-year battery life in standby. Use Value: 2μA quiescent current and 60V input capability allow direct connection to 9V alkaline stack or 12V backup battery without additional conditioning. |
Use Scenario: Local 3.0V supply for cell voltage monitoring ICs and isolation interface in high-voltage EV battery packs (up to 800V bus). IC Role / Device Role / Timing Role: Post-regulator after isolated DC-DC converter, delivering precise, ripple-free voltage to ADC references and CAN transceivers. Use Value: 70dB PSRR and ±2% accuracy ensure measurement integrity despite EMI from nearby inverters and contactors. |
| Microcontroller Core Supply | Home Appliance Sensor Hub |
Use Scenario: Dedicated 3.0V rail for ARM Cortex-M0+ or RISC-V MCU cores in industrial controllers requiring deterministic startup timing. IC Role / Device Role / Timing Role: Low-noise, fast-response LDO ensuring stable VDD during brown-in/out transitions and firmware wake-up events. Use Value: 700mV dropout at 100mA enables operation from partially discharged 3.7V Li-ion cells while maintaining full CPU performance. |
Use Scenario: Power source for multi-sensor fusion modules (temperature, humidity, motion) in smart washing machines and HVAC controls. IC Role / Device Role / Timing Role: Single-point regulation for mixed-signal sensor front-ends and low-power wireless SoCs operating in thermally variable environments. Use Value: Thermal shutdown with +30°C hysteresis prevents latch-up during cabinet heating cycles, ensuring reliable long-term operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-quiescent-current LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7361-30SA-7 | Lower max input (40V vs. 60V); same 3.0V output, 150mA, 2μA IQ, but higher dropout (850mV @ 100mA). | Limited to 24V/36V systems; unsuitable for 48V telecom or EV auxiliary rails. | Select only if input never exceeds 40V and board layout allows slightly larger dropout margin. |
| TPS7B8730QKVURQ1 | Automotive-grade (AEC-Q100); 40V max input; 150mA; 17μA IQ (vs. 2μA); integrated enable and reset functions. | Requires external pull-up for EN; higher IQ reduces battery life in always-on applications. | Prefer when functional safety compliance (ISO 26262 ASIL-B) and diagnostic features are mandatory. |
Compared with AP7387-30SA-7, AP7361-30SA-7 trades input voltage headroom for identical package and IQ, while TPS7B8730QKVURQ1 adds automotive qualification and control logic at the cost of 8.5× higher quiescent current-making AP7387-30SA-7 optimal for cost-sensitive, ultra-low-power, wide-input industrial and consumer systems.
Availability
AP7387-30SA-7 is available at Aetrix Electronics and suitable for battery-powered equipment, smoke detectors and sensors, and EV/HEV battery management systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AP7387-30SA-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions for industrial, automotive, computing, and consumer markets.
The AP7387 belongs to Diodes' ULDO regulator product line, engineered specifically for high-input-voltage, ultra-low-power applications where reliability under harsh electrical conditions and minimal standby consumption are essential.
FAQ
What is the minimum input voltage required for regulation at 3.0V output?
The AP7387-30SA-7 requires VIN ≥ VOUT + VDROP. With typical dropout of 700mV at 100mA, minimum input is 3.7V. At 150mA, dropout rises to 1100mV, so VIN must be ≥ 4.1V to maintain regulation. Input below 5.0V is not recommended per absolute maximum ratings.
Can AP7387-30SA-7 operate without an output capacitor?
No. The device requires a minimum 10μF ceramic output capacitor (X7R/X5R) for stability and transient response. Omitting it causes oscillation, excessive overshoot/undershoot, and potential thermal shutdown. Placement within 2mm of VOUT and GND pins is mandatory per layout guidelines.
Is the SOT23 package lead-free and RoHS compliant?
Yes. AP7387-30SA-7 uses matte tin-plated leads, is fully RoHS 3 compliant (2015/863/EU), halogen- and antimony-free ("Green"), and meets J-STD-020 moisture sensitivity Level 1-suitable for standard reflow profiles without baking.
Does AP7387-30SA-7 support adjustable output voltage?
No. It is a fixed 3.0V output device. The AP7387 family offers only factory-trimmed fixed outputs: 3.0V, 3.3V, 3.6V, and 5.0V. No external resistor divider or feedback pin is provided; output voltage cannot be modified in-circuit.
AP7387-30SA-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.35V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 4 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Current Limit
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AP7387-30SA-7 FAQ
1.How can I place an order for AP7387-30SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7387-30SA-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AP7387-30SA-7 reliable?
The price and inventory of AP7387-30SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7387-30SA-7 is usually 5 days.
3.What payment methods are accepted for AP7387-30SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7387-30SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7387-30SA-7?
AP7387-30SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7387-30SA-7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AP7387-30SA-7?
For technical support, including AP7387-30SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7387-30SA-7 requirements.
6.How does Aetrix verify that AP7387-30SA-7 is sourced from the original manufacturer or authorized distributors?
All AP7387-30SA-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AP7387-30SA-7 meets industry standards.
7.What is the process for return or replacement of AP7387-30SA-7?
All AP7387-30SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7387-30SA-7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AP7387-30SA-7 part is unused and in its original packaging.
Return procedure for AP7387-30SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP7387-30SA-7 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
